# ParameterSummaryString A human-readable string that interpolates parameter key paths to provide user-configurable placeholders in the Shortcuts app. ``` struct ParameterSummaryString where Intent : AppIntent ``` ## Topics ### Creating the summary string [`init(String)`](/documentation/AppIntents/ParameterSummaryString/init(_:)) ## Relationships ### Conforms To [`ExpressibleByStringLiteral`](/documentation/Swift/ExpressibleByStringLiteral) [`ExpressibleByUnicodeScalarLiteral`](/documentation/Swift/ExpressibleByUnicodeScalarLiteral) [`ExpressibleByExtendedGraphemeClusterLiteral`](/documentation/Swift/ExpressibleByExtendedGraphemeClusterLiteral) [`ExpressibleByStringInterpolation`](/documentation/Swift/ExpressibleByStringInterpolation) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)